azurecurve

featured-image shortcode allows a floating featured image to be placed at the top of a post. Default settings can be entered to simplify the use of the plugin.
When used several parameters are available for use: 
1. image – to use an image other than the default 
2. title – set a title on the image (will appear in the tooltip) 
3. alt – enter the alt text for when the image cannot be displayed 
4. taxonomy – enter a category or tag name or slug to have a hyperlink added to the image 
5. is_tag – set to 1 for when the taxonomy should be a tag instead of a category
This plugin is multi-site compatible.
This plugin supports language translations. If you want to translate this plugin please sent the .po and .mo files to wordpress.translations@azurecurve.co.uk for inclusion in the next version (full credit will be given). The .pot fie is in the languages folder of the plugin and can also be downloaded from the plugin page on http://development.azurecurve.co.uk.
Current translations: 
Serbian (sr_RS) translation by Borisa Djuraskovic of <a href="http://www.webhostinghub.com/" rel="nofollow ugc">Web Hosting Hub</a>

azurecurve Floating Featured Image

Shortcode allowing a floating featured image to be placed at the top of a post; this plugin is multi-site compatible.

cyrillbolliger

Easily control the visibility of the featured image on singular posts and pages–while keeping it visible in archive pages, query loops, and other list views. This plugin provides a simple checkbox option within the post editor, allowing you to enable or disable the display of the featured image on individual posts and pages.
<h4>Key Features</h4>
<ul>
<li>Show or hide the featured image on singular pages and posts.</li>
<li>Seamlessly integrates with the WordPress post editor.</li>
<li>Simple checkbox toggle—no technical knowledge needed.</li>
<li>Compatible with most themes.</li>
<li>Supports WooCommerce product pages.</li>
<li>Lightweight and optimized for performance.</li>
<li>100% free—no ads, no upsells, no premium versions!</li>
</ul>
Perfect for bloggers, content creators, and developers who want precise control over the visibility of featured images on a per-post basis.
<h4>Important Notice</h4>
If your theme uses a custom method to load the featured image (such as the Twenty Seventeen theme), this plugin may not work. To ensure compatibility, use standard WordPress functions like <code>get_the_post_thumbnail()</code>, <code>wp_get_attachment_image()</code>, or the <a href="https://wordpress.org/support/article/post-featured-image-block/" rel="ugc">Post Featured Image</a> block.
Additionally, by default, this plugin only hides the featured image when it is loaded inside the loop. If your theme loads it outside the loop check out the first FAQ entry for a solution.

Conditionally display featured image on singular posts and pages

It works!

I was able to get this working on Genesis Press themes by adding the following code.

function wp234_featured_post_image($v) {
 global $post;

	if ( is_singular( 'post' ) && get_post_meta( $post->ID, 'cybocfi_hide_featured_image', true ) ) {
 return ' ';
	}

 return $v;
}
add_filter( 'genesis_pre_get_image', 'wp234_featured_post_image', 8 );

Works great!

Easily control whether the featured image appears in the single post or page view (doesn't hide it in archive/list view).

azurecurve Floating Featured Image vs Conditionally display featured image on singular posts and pages